Mini-dungeon

Mini-dungeons or minidungeons are dungeon-like areas in persistent areas. There are typically two types of mini-dungeons, the first involve puzzles of various kinds and can either be accessible all the time or while a certain events are completed and the second are shorter areas which are filled with enemies that you must fight through. Many of these mini-dungeons, although not all, offer an Explorer achievement at the end.

Jumping puzzles are mini-dungeons with platforming elements, which are usually hidden and offer a Jumping Puzzle achievement at the end. Mini-dungeons with platforming elements but no corresponding achievement are generally not referred to as jumping puzzles.